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Brush marks in urethane finish

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Forum topic by bygrace posted 08-10-2017 06:52 PM 383 views 0 times favorited 9 replies Add to Favorites Watch
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bygrace

173 posts in 1802 days


08-10-2017 06:52 PM

Topic tags/keywords: spar urethane

I’m finishing up a farmhouse table for a client. She saw a previous table I did that I had used satin varnish on but wanted hers even less glossy than the satin so I chose some Minwax Pro Series Spar Urethane. I had used it on another project and knew it had a lot less sheen. My problem is I can’t get away from the brush marks where I blend it together. I work pretty fast but this stuff gets tacky almost immediately after you apply it, and when you’re working across a 40 inch wide table, you just can’t work fast enough. I have four coats on it now. Any ideas? I’m in Texas and I can only get my shop down to about 80 degrees.

-- Andy, Waxahachie, Tx.


9 replies so far

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Vindex

76 posts in 655 days


#1 posted 08-10-2017 07:01 PM

I am a complete novice myself. However, as I understand it, almost all commercial varnishes need to be thinned before you apply them. That is probably even more important when it is hot outside (I live in San Antonio, so I have the same problem you do). You can always thin the varnish enough to wipe it on. That’s what I did on my most recent project.

This site offers a good explanation of the process:

http://www.askhlm.com/Articles/ArticleViewPage/tabid/75/ArticleId/5/Wipe-on-Varnish.aspx":http://www.askhlm.com/Articles/ArticleViewPage/tabid/75/ArticleId/5/Wipe-on-Varnish.aspx

Hope that helps!

-Brad

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bygrace

173 posts in 1802 days


#2 posted 08-10-2017 07:04 PM

Thanks Brad, ill check it out.

-- Andy, Waxahachie, Tx.

View Rick_M's profile

Rick_M

10599 posts in 2213 days


#3 posted 08-10-2017 07:27 PM

I would sand or scrape it smooth and thin the last coat or two.

-- http://thewoodknack.blogspot.com/

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TheFridge

8287 posts in 1319 days


#4 posted 08-10-2017 07:39 PM



I would sand or scrape it smooth and thin the last coat or two.

- Rick M

Ditto

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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bygrace

173 posts in 1802 days


#5 posted 08-10-2017 08:08 PM

Rick and Fridge – that’s what was going through my mind also. should I thin with mineral spirits or just water, since its water based. Ive read both or okay. Thanks

-- Andy, Waxahachie, Tx.

View Redoak49's profile

Redoak49

2887 posts in 1822 days


#6 posted 08-10-2017 08:19 PM

It is not surprising that you might have problems like described. It is a very fast drying finish. I would do some trials with thinning it and what you thin it with.

I was reading about this product and it mentions that it stays flexible. I wonder how hard it will get for a table top.

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Rich

1972 posts in 422 days


#7 posted 08-10-2017 08:39 PM



Rick and Fridge – that s what was going through my mind also. should I thin with mineral spirits or just water, since its water based. Ive read both or okay. Thanks

- bygrace

If it’s waterborne poly, thin it with water. Preferably distilled.

-- No matter how much you push the envelope, it'll still be stationery.

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bygrace

173 posts in 1802 days


#8 posted 08-10-2017 10:19 PM

Redoak49 – I think your probably right about using again for a table top. I was thinking about the extra water and heat a table top has to endure. I will definitely go back to Behlen’s Rock hard Table Top Varnish.

RichTaylor – sounds good. ill try that first.

Thanks for all your help guys!

-- Andy, Waxahachie, Tx.

View bobkberg's profile

bobkberg

439 posts in 2906 days


#9 posted 08-11-2017 05:43 AM

Going out on a limb here, as I am not familiar with the varnish you mentioned, but can it be sprayed?

Regards,

Bob

-- Bob www.singularengineering.com - A sideline, not how I earn a living

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